Folder protecting device



FOLDER PROTECTING DEVICE Filed May 1, 1929 2 Sheets-Sheet 1 30 circuitwhich, when connected so as to allow Patented Mar. 20, 1934 UNITEDSTATES PATENT OFFICE FOLDER PROTECTING DEVICE Application May 1, 1929,Serial No. 359,566

10 Claims.

This invention relates to a device for protecting the parts of a folderfor papers and other sheet material against damage when the sheets wraparound the rolls or cylinders of the folder.

The principal objects of the invention are to provide means whereby theaccumulation of sheet material on the cylinders or rollers of thefolding machine will be prevented from causing damage by automaticallystopping the machine and to provide this mechanism in a simple andinexpensive form which is sure to work when the emergency arises.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 isan end view of a part of a folding machine showing operating means forstopping the folder in emergency in section;

Fig. 2 is a plan thereof, and

Fig. 3 is a plan of the invention as applied to the folding rolls.

It is well known that when the paper, particularly in a newspaperfolding machine, winds up on one of the cylinders or rolls it willengage the opposite cylinder or roll of the pair and is liable to causedamage by straining the parts. This invention is designed to avoid suchaction.

The folding machine is usually operated by electrical means which isprovided with a stop the current to pass through it, will shut off theelectric current from the motor which operates the machine and stop it,advantage of which is taken to accomplish the purpose of this invention.

I have shown the invention as applied to a folding machine comprising afolding cylinder 11, cutting cylinder 12 and two folding rolls 13 and 14illustrated as in their usual relation to each other. The web of papercomes down through in the usual way, as illustrated in Fig. 1, and isdelivered by the folding rolls to the fan delivery 15. The cylinders 11and 12 constitute the folding couple.

Referring to Figs. 1 and 2 I have provided an emergency lever 16 shownas of the bell crank type and kept in neutral position by springs 17. Onone arm of the bell crank are double contacts 18 which, when the leveris turned in either direction, will make a contact with either one of apair of conducting pieces 19 which will complete one of the breaksacross the circuit 10 and connect up a circuit so as to stop this pairof cylinders.

This lever 16 is located adjacent to the running web and at a pointpractically between the two cylinders 11 and 12.

Now, if the web of paper does not go through the folding action butaccumulates or piles up or increases in bulk on the cylinder 12 behindthe moving web, it will force this lever over to the left in Fig. l andcause the machine to stop. Also if the paper should for any reasonaccumu late, or pile up or increase in bulk in the space between therunning web and the cylinder 11, the

web will engage this lever and cause it to move in the other directionand have the same effect.

In Figs. 1 and 2 I have shown the same idea as applied to the foldingrolls 13 and 14. Here two levers 20 and 21 are located adjacent to thesurfaces of these two folding rolls. Obviously if the paper accumulatesor jams or bunches between those rollers or increases in bulk on eitherof these rolls it will actuate the lever 20 or 21 as the case may be.These levers are provided with 7 contacts 22 and they are spring-pressedand when the paper winds up on either roll the corresponding lever willbe moved to close its contact. This will complete the circuit 10 andstop the machine in either case.

The lever 21 acts a little different from the other because the roll 13is pressed toward the roll 14 by a spring 23 and in this case the levermay be operated either by the paper wrapped around this roll or by themotion of this roll back against the spring 23 due to the thickness ofthe paper between the two rolls even if it is wound on the oppositeroll. In either case the lever 21 will be operated to stop the machine.

This constitutes a very simple way of avoiding mulates on any one of thecylinders or rolls of the folding machine. It is inexpensive to installand has very few elements to keep in order. It is always in readinessfor operation and there is no danger of accidental operation.

Although I have illustrated and described only two forms of theinvention I am aware of the fact that other modifications can be madetherein by any person skilled in the art without departing the claims.Therefore,I do not wish to be limited in this respect but what I doclaim is:

1. In a folding machine, the combination with folding and cuttingcylinders, of an emergency 105 member mounted adjacent to saidcylinders, said. i member being movable and having an electric contactadapted to be closed by its movement due to an accumulation of paper oneither of said cylinders and a stop circuit in which said contact 110damage likely to happen when the paper accuf"? from the scope of theinvention as expressed in is located, arranged to stop the foldingmachine upon movement of the lever.

2. The combination with a folding couple comprising a pair of cylinders,of a movable element located at a point adjacent to both cylindersthereof and in a position to be moved by any accumulation of paper oneither of the cylinders, stop circuits, 2. pair of contacts in said stopcircuits, a pair of contacts adapted to be moved by the movement of saidmovable element to close either of said circuits according to thedirection of motion thereof, and means connected with said stop circuitsto stop the rotation of said cylinders.

3. In a folding machine, the combination with cutting and foldingcylinders and a pair of folding rolls, one being movable, of a leverlocated adjacent to the surfaces of said movable roll, whereby uponaccumulation of paper the roll and lever will be caused to move by theaccumulation of paper, a stop circuit for stopping the folding coupleand a contact in the stop circuit arranged to be closed by the motion ofsaid lever, whereby the cylinders will be stopped.

4. In a folding machine, the combination with a folding couple and apair of folding rolls, one of which rolls is movable, a lever locatedadjacent to the surface of one of said rolls, yielding means forpressing that roll toward the other, a stop circuit for stopping therolls and a contact operated by said lever for closing the stop circuitwhen the paper accumulates on either of said rolls and pushes themovable roll away from the other.

5. In a folder, the combination with a pair of folding rolls, of a leverlocated adjacent to the surface of one roll and on the side thereofopposite to the other roll, a stop circuit, an open contact in saidcircuit located on said lever, whereby the motion of said lever due toaccumulation of paper on the roll and the movement of the roll againstthe lever will close the stop circuit and stop the machine, and yieldingmeans for holding the lever in position for keeping the contact open.

6. In a folding machine, the combination with folding and cuttingcylinders, of an emergency member mounted adjacent to one of saidcylinders, said member being movable and having an electric contactadapted to be closed by its movement due to an accumulation of paper onone of said cylinders, a stop circuit in which said contact is locatedarranged to stop the folding machine upon such motion of the lever andyielding means for holding said movable member in neutral position tokeep said contact open.

'7. In a folding machine, the combination with cutting and foldingcylinders, of a lever located adjacent to the surface of a web passingbetween said cylinders whereby an accumulation of paper on one cylinderwill move the web against the lever, a stop circuit for stopping thefolding couple and a contact in the stop circuit arranged to be closedby the motion of said lever, whereby the cylinders will be stopped.

8. In a folder, the combination with a pair of folding rolls forreceiving a web between them, of a lever located adjacent to the surfaceof one roll between the roll and the web and on the side of that rollopposite the other roll, a stop circuit open contacts in the circuit,one of said contacts being located on said lever, whereby the motion ofthe web due to accumulation of paper will move the web and close thestop circuit and stop the folder.

9. In a folder, the combination with a pair of folding rolls, of twolevers, one located adjacent to the surface of each roll and on thesides of said rolls opposite the bight, two stop circuits, open contactsin each circuit, one of said contacts in each case being located on oneof said levers, whereby the motion of either of said levers due toaccumulation of paper on one of the rolls I will close the stop circuitand stop the machine.

10. In a folder, the combination with a pair of folding rolls, of alever located adjacent to the outside surface of one roll, said rollbeing movable, a stop circuit, an open contact in said circuit locatedon said lever, whereby the motion of said movable roll due toaccumulation of paper on either roll will move the lever and close thestop circuit and stop the machine, and yielding means for holding thelever in position for keeping the contact open.

HENRY A. WISE WOOD.

